refactor(logging): introduce custom FastLogger and replace direct Android logging

core/logger/.gitignore

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+/build

core/logger/build.gradle.kts

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+plugins {
+    alias(libs.plugins.fast.android.library)
+}
+
+android {
+    namespace = "dev.meloda.fast.logger"
+}
+
+dependencies {
+    implementation(libs.koin.android)
+}

core/logger/src/main/kotlin/dev/meloda/fast/logger/FastLogLevel.kt

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+package dev.meloda.fast.logger;
+
+enum class FastLogLevel {
+    VERBOSE,
+    DEBUG,
+    INFO,
+    WARNING,
+    ERROR,
+    ASSERT;
+
+    companion object {
+        fun parse(value: Int): FastLogLevel {
+            if (value !in 0..5) throw IllegalArgumentException("Unknown LogLevel value $value")
+            return entries.first { it.ordinal == value }
+        }
+    }
+}

core/logger/src/main/kotlin/dev/meloda/fast/logger/FastLogger.kt

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+package dev.meloda.fast.logger
+
+import android.util.Log
+import kotlin.reflect.KClass
+
+class FastLogger {
+    companion object {
+
+        @Volatile
+        private lateinit var instance: FastLogger
+
+        fun setInstance(logger: FastLogger) {
+            if (::instance.isInitialized) {
+                throw IllegalStateException("FastLogger has already been initialized.")
+            }
+
+            instance = logger
+        }
+
+        fun getInstance(): FastLogger {
+            if (!::instance.isInitialized) {
+                throw UninitializedPropertyAccessException("FastLogger is not initialized.")
+            }
+            return instance
+        }
+    }
+
+    private var logLevel: FastLogLevel = FastLogLevel.ERROR
+
+    fun setLogLevel(logLevel: FastLogLevel) {
+        Log.v(this::class.java.simpleName, "Set LogLevel from ${this.logLevel} to $logLevel")
+        this.logLevel = logLevel
+    }
+
+    fun verbose(clazz: Class<*>, message: String, throwable: Throwable? = null) {
+        verbose(clazz.simpleName, message, throwable)
+    }
+
+    fun verbose(tag: String, message: String, throwable: Throwable? = null) {
+        if (shouldLog(FastLogLevel.VERBOSE)) {
+            Log.v(tag, message, throwable)
+        }
+    }
+
+    fun debug(clazz: KClass<*>, message: String, throwable: Throwable? = null) {
+        debug(clazz.java, message, throwable)
+    }
+
+    fun debug(clazz: Class<*>, message: String, throwable: Throwable? = null) {
+        debug(clazz.simpleName, message, throwable)
+    }
+
+    fun debug(tag: String, message: String, throwable: Throwable? = null) {
+        if (shouldLog(FastLogLevel.DEBUG)) {
+            Log.d(tag, message, throwable)
+        }
+    }
+
+    fun info(clazz: KClass<*>, message: String, throwable: Throwable? = null) {
+        info(clazz.java, message, throwable)
+    }
+
+    fun info(clazz: Class<*>, message: String, throwable: Throwable? = null) {
+        info(clazz.simpleName, message, throwable)
+    }
+
+    fun info(tag: String, message: String, throwable: Throwable? = null) {
+        if (shouldLog(FastLogLevel.INFO)) {
+            Log.i(tag, message, throwable)
+        }
+    }
+
+    fun warning(clazz: Class<*>, message: String, throwable: Throwable? = null) {
+        warning(clazz.simpleName, message, throwable)
+    }
+
+    fun warning(tag: String, message: String, throwable: Throwable? = null) {
+        if (shouldLog(FastLogLevel.WARNING)) {
+            Log.w(tag, message, throwable)
+        }
+    }
+
+    fun error(clazz: KClass<*>, message: String, throwable: Throwable? = null) {
+        error(clazz.java, message, throwable)
+    }
+
+    fun error(clazz: Class<*>, message: String, throwable: Throwable? = null) {
+        error(clazz.simpleName, message, throwable)
+    }
+
+    fun error(tag: String, message: String, throwable: Throwable? = null) {
+        if (shouldLog(FastLogLevel.ERROR)) {
+            Log.e(tag, message, throwable)
+        }
+    }
+
+    fun assert(clazz: Class<*>, message: String, throwable: Throwable? = null) {
+        assert(clazz.simpleName, message, throwable)
+    }
+
+    fun assert(tag: String, message: String, throwable: Throwable? = null) {
+        if (shouldLog(FastLogLevel.ASSERT)) {
+            Log.wtf(tag, message, throwable)
+        }
+    }
+
+    private fun shouldLog(level: FastLogLevel): Boolean = level.ordinal >= logLevel.ordinal
+}

core/logger/src/main/kotlin/dev/meloda/fast/logger/LoggerModule.kt

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+package dev.meloda.fast.logger
+
+import org.koin.core.module.dsl.singleOf
+import org.koin.dsl.module
+
+val loggerModule = module {
+    singleOf(::FastLogger)
+}